tree 8f59d036678757a8c9f6304c9cdf2bca51abcb30
parent cd9139220b87f40ea83858de1d6436c639376ce7
author Roger Pau Monne <roger.pau@citrix.com> 1533728801 +0200
committer Boris Ostrovsky <boris.ostrovsky@oracle.com> 1533740600 -0400

xen/balloon: fix balloon initialization for PVH Dom0

The current balloon code tries to calculate a delta factor for the
balloon target when running in HVM mode in order to account for memory
used by the firmware.

This workaround for memory accounting doesn't work properly on a PVH
Dom0, that has a static-max value different from the target value even
at startup. Note that this is not a problem for DomUs because guests are
started with a static-max value that matches the amount of RAM in the
memory map.

Fix this by forcefully setting target_diff for Dom0, regardless of
it's mode.

Reported-by: Gabriel Bercarug <bercarug@amazon.com>
Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>